Remember Flow, Amazon's augmented reality shopping aid that kinda sorta worked? Well now you don't have to, because the functionality has been rolled into the main Amazon shopping app. Now you can scan barcodes and even full products (at least some of the time) to compare their prices to everyone's favorite online megamart. And incidentally, you don't need a second app to do it.

The Flow features work best with a barcode, but the camera scanner will try to identify anything.

While Google's been working feverishly to build out its Play Store, bringing it to other countries and expanding its offerings, the company's music store has been lacking one crucial feature that its competitors have: library matching. Where Amazon and iTunes can scan your current collection and add the songs to your online storage, Google has, until recently, required users to upload every individual track manually. A long and tedious process. In mid-November, the scan and match feature came out for Europe, and today it arrives for US residents.